Maui Jim Unisex Sunglasses Protective Plastic Square Black With Grey Polarized Lenses Neutral Grey Offers the highest available light reduction for the richest Colors and Sharpest Contrast. The lenses work best against bright direct sunlight and there by help reduce eye strain & headaches. This lens is built with Maui Jim's PolarizedPlus2 Technology, which eliminates 99.9% of glare & blocks 100% of UV rays.